Hermann buyten



No. ("4,833. Patented Nov. 29, I898.

. H. BUYTEN.

SAND BLAST APPARATUS.

I (Application filed Nov. 2, 1897.) (No Model.) 2 Sheets-Sheet I.

Fig: 1.

: Pi gy N'0. 6l4,833.- Patented Nov. 29, I898. H. BUYTEN.

SAND BLAST APPARATUS.

(Application filed Nov. 2, 1897.)

2 Sheets-Sheet 2.

(No Model.)

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UNITED STATES PATENT OFFICE.

HERMANN BUYTEN, OF DUSSELDORF, GERMANY.

SAN D-BLAST APPARATUS.

SPECIFICATION forming part of Letters Patent No. 614,833, dated November29, 1898.

Application filed November 2,1897. Serial No. 657 157. (No model.)

To aZZ whom it may concern:

Be it known that I, HERMANN BUYTEN, a citizen of the German Empire,residing atDus seldorf, Germany, have invented a new and Improved Methodof and Apparatus for Bringing out Plastically the Veining on Wood, ofwhich the following is a specification.

This invention relates to improved means for bringing out in a plasticmanner the grain on the surface of wood, so as to impart to the latter apeculiar antique appearance. The wood is exposed to the action of a sand-blast and is moved longitudinally and transversely over the same, sothat the blast is directed evenly over the entire surface of the wood,or, if desired, the wood may remain stationary while motion is impartedto the nozzle of the sand-blast apparatus. The blast will remove thesofter particles of the wood, while the harder grain will come to thesurface. The sand-blast may be operated by steam, air, or other power,or the sand may be forcibly thrown against the wood by wings or othermechanical devices.

In the accompanying drawings, Figure 1 is a sectional elevation of anapparatus embodying my invention; Fig. 2, a plan thereof with some ofthe parts omitted; Fig. 3, a vertical cross-section on line A B, Fig. 1;and Fig. 4., a side elevation of part of the apparatus. Figs. 5 and 6are transverse sections of the apparatus, showing the dog 13 tilted inopposite directions.

The letter A represents the ejector of the sand-blast apparatus, whichthrowsthe jet of sand out of nozzle 0 and against the wood to begrained. This Wood is fed automatically backward and forward and alsosidewise over the blast by means of an endless chain Z0, which passesover a pair of pulleys 7c and receives motion from shaft W.

e and d are a pair of frames, of which the frame 0 receivesreciprocating longitudinal motion and the frame cZ receives transversemotion from chain lo. 'Olamps e, engaging the frames and adjustablethereon, permit boards B of different sizes to be attached thereto.heads 0, engaging with their ends the groove of a fixed railn andserving to guide the frame in a rectilinear direction.

Motion is transmitted from the chain 74; to the frame a as follows: Tothe frame c is pivoted a laterally-oscillating lever 19, carrying a dogp, which has two serrated edges adapted to alternately engage the linksof chain is. The front and rear edges of the dog are inclined andadapted to contact alternately with oppositely-inclined stops g, affixedto the ends of the race. As the dog contacts with these stops it isalternately swung sidewise in opposite directions, so as to engageopposite sides of the chain and to thus impart reciprocatinglongitudinal motion to frame a. In order to hold the dog in either ofits inclined positions, it is provided with anose fi, engaged by atripspringf, Fig. 3.

The oscillation of dog 19 also effects the lateral movement of frame cZas follows: From the dog p projects upwardly an arm 71., that rotates alongitudinal shaft Z by means of links 1' Z. To shaft Z is connected anarm m, having a pawl m, which engages a toothed bar 2 of frame cZ. Asthe dog 19 is rocked it will rock the shaft Z to move the frame cZacross the blast for the distance of one or more teeth.

What I claim is- In an apparatus for bringing out the grain on wood, thecombination of a sand-blower with a longitudinally-movable frame, atilting serrated dog mounted thereon, means for tilting the dog at theends of the race, a chain engaging the dog, a laterally-movable framehaving a rack, and a pawl operated by the dog and engaging the rack,substantially as specified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HERMANN BUYTEN.

Witnesses WILLIAM ESSENWEIN, WALTHER FRIEDRICH.

The frame 0 is provided with cross-

